I've used a Pacmania.
From what I can see, yes the pins are sitting correctly.
You said none of the jumpers should matter, except JP3 right ?
Edit :
Baraduke II voice samples in are correct ("I'm your friend !")
Bravoman samples are correct as well. Can anyone flip the screen in the test menu on this one ? The only test menu so far with a sound test, and I can't use it...
Blast Off : samples incorrect
Blazer : samples incorrect (at the end of the attract mode, after the player's tank has been destroyed, there's normally the sound of a motor before going back to the title screen - in my case it plays the sound of the player's tank shooting instead)
Boxy Boy : samples seem correct (based on the attract mode)